agree [ə'ɡri:]
vi.
1. (对提议、计划、条件等)表示同意,赞成(to)； (对意见等)表示赞同(with):
I cannot agree with your opinions.
我不能同意你的观点.
Do you agree to the conditions?
你同意这些条件吗?
2. (意见)相同,(与某人)持相同意见,持一致看法(with):
I agree with him.
我的意见和他的相同.
I don't agree with you.
我不同意你的意见.
3. (就价钱、条件等)达成协议,商定 (about, on, upon):
They have agreed on the terms of surrender.
他们就投降条件达成了协议.
The two groups agreed on a cease-fire.
两派达成了停火协议.
4. 表示愿意,应允,答应：
I agree to leave at once.
我答应即刻离开.
5. (性情等)投合；相符,相同,一致(with):
This story agrees with his.
这个叙述与他的叙述一致.
The play does not agree with the book.
这个剧本与原著不相符.
6. 和睦相处：
They can't agree well.
他们无法和睦相处.
7. (食物、气候等)相宜,适宜,适合(with):
The food did not agree with her.
这种食物不合她的胃口.
The climate agrees with me fairly well.
这气候对我非常适宜.
8. 【语法学】(在性、数、人称或格方面)一致,响应(with):
In “The boy runs”, boy is a singular noun and runs agree with it in number.
在 “The boy runs” 此句中,boy 是单数名词, runs 在数方面与它呼应.
An adjective must agree with its noun in mumber and case.
形容词在数和格方面必须符合其所修饰的名词.
vt.
1. 造成,同意；承认[后接名词从句]：
I agree that she is the ablest of us.
我承认她是我们之中最能干的一个.
The boy agrees that his elder sister is much clever than him.
这个男孩承认他姐姐比他聪明得多.
2. [主英国英语]对…达成协议,就…取得一致意见；对(提议、计划、条件等)表示同意；对(意见等)表示赞同：
I must agree your plans.
我应该赞成你的计划.
We agree the stipulations.
我们就协定取得一致意见.
3. 认定(账目、数字等)正确无误；使和谐一致：
to agree the balance sheet with the record
弄平资产负债表和流水账
至于agree in ,好像没有这样的用法,如果你有电脑建议下载有道词典